# conding = utf-8
import random


def random_str(length):
    '''
    根据长度,随机字符串
    :param length:
    :return:
    '''
    s = [v for v in "abcdefghijklmnopqrstuvwxyz"] * 10000
    return "".join(random.sample(s, length))


s = eval("random_str(6)")
print(s)
